Finding the Fourth Proportional to 13,772.77, 19,009.06 and 7,804.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,772.77 : 19,009.06 = 7,804.69 : x
2. Step 2: Convert to fraction form
   13,772.77/19,009.06 = 7,804.69/x
3. Step 3: Cross multiply
   13,772.77x = 19,009.06 × 7,804.69
4. Step 4: Simplify right side
   13,772.77x = 148,359,753.46
5. Step 5: Solve for x
   x = 148,359,753.46/13,772.77
6. Step 6: Final answer
   x = 10,771.96